meh...
ok a few things
The preloader: very unique, you should use it in all of your future projects
Flow of the game: kinda difficult, but I understand where that's coming from, you need a fast reaction time. but try to make the enemies miss (for the slow gamers sake)
Sounds: a bit repetetive. dice it up or use a fellow contributors' songs (I know a perfect song for this called Tokyo 6pm by Dreamscaper... awesome track to utilize)
Overall: very impressive. I liked it very much, despite the difficulty.
-SD-